EP0992646B1 - Espagnolette or espagnolette lock for doors, windows or the like - Google Patents

Description

The invention relates to a cremone or espagnolette-lock comprising a housing adapted adapted to take position in a notch formed for this purpose in rebate of a door opening frame, window or the like, this housing enclosing a control mechanism comprising at least one follower adapted to be controlled in rotation by means of a control handle, on this follower, provided with a suitable toothing, coming to be meshing with a rack, on the one hand, equipping an operating rod or a connected bridge to the latter, and, on the other hand, substantially registering, between said follower and a headrest behind which is extended, above and / or below the housing, or the rods of maneuver, in the bottom of the housing being formed a semicircular housing coaxial with the follower for receiving and guiding the latter.

The present invention will find application in the field of building hardware.

In fact, there are already a good number of espagnolettes or espagnolette locks as described above, but they all have a disadvantage related to their size.

In this regard, it should be recalled that the profiles from which are designed joineries such as doors, windows or the like, tend to adopt increasingly smaller sections.

Several reasons explain this. The first is that it is constantly sought solutions to reduce the manufacturing cost, the material gain being one. Another reason, which is certainly just as important as the previous one, is that it is sought, for the windows and French windows, to obtain the largest glazed area for an opening dimension determined in a building. This problem is even more crucial in case of renovation where it is customary to leave in place the dormant frame of the existing window. This one is in fact, dressed by means of the dormant frame of the window of renovation. However, such an operation results, inevitably, in a reduction of this glazed surface.

It is understood that to address this problem it is necessary to gain on the thickness of the profiles, whether wood, aluminum or PVC, from designing the frame and, more particularly, the opening frame. Now, in the thickness of these profiles corresponding to the opening frame, must take position the elements corresponding to a lock fitting, type espagnolette or espagnolette-lock, in particular, the central housing hosting the control mechanism.

Note, in this regard, that the control mechanism comprises, at least, a follower rotatably mounted in this housing and on which must be able to intervene a user through the square maneuvering a handle or a command button.

We already understand that all the efforts of transmission of movement come to exert on this follower.

In this regard, the latter receives at the periphery at least one suitable toothing to come to meshing on a rack equipping at least one of the operating rods extending above and / or below the housing or a bridge provided adapted to transmit the movement to such a rod maneuver.

Usually, this housing accommodating the control mechanism is attached to the rear of a headrest, the latter coming to house, moreover, the operating rods once the espagnolette or espagnolette-lock recessed rabbet of said opening frame.

The control mechanism of such a cremone or espagnolette-lock can be further completed for other members, such as an inverter pinion for transmitting two rods of maneuver extending, respectively, above and below of the housing, displacements in opposite directions during the locking or unlocking control. In some cases, this function of the inverted gear is provided by the follower itself.

By way of example, the document FR-A-2,722,826 describes, more particularly, a cremone corresponding to this description, taking into account that the follower receives, here again, a locking bolt which, in the locked position, is brought to its position. extend through an opening in the rack arranged between the follower and the headrest and, of course, an opening provided for this purpose in the latter.

Be that as it may, it will be noted that the depth of the casing of this type of espagnolette or espagnolette-lock has a minimum dimension determined by the section of the follower and the extra thickness that produces, at the back of the headrest, the rack coming to get on this fouillot.

On this it should be noted that the hub of the follower has a minimum section imposed, on the one hand, for mechanical resistance and on the other hand, by the largest section that can adopt the square maneuver of the handle or the control knob for this type of housing.

Thus, even if the other members of such a control mechanism could take a position, in some cases, in a lower depth housing, that does not matter, this depth of housing is related to the aforementioned data.

Under these conditions it is advisable to practice in the joinery a notch of a depth corresponding to that of the case and, this, on the entirety of the height of the latter. Now, precisely, supposing that this joinery has a small thickness, in particular because of the presence of a glazing, this notching for a not insignificant length, comes to weaken substantially, this profile.

On this, it will be observed that it is known, through DE-A-44 09 420 a espagnolette whose housing accommodating the control mechanism comprises at its bottom a protrusion which requires, again, the use of a cutter or a chisel for the development, at the bottom of the carpentry groove, a housing for the reception of this outgrowth.

In any case, the rear wall of this outgrowth, at the bottom of the case, has been removed so as to define an opening in which the ends of the furrow teeth can be inscribed to execute a rotation of at least one half -tower. In fact, these teeth are here to emerge outside the housing. Also, if one wishes that the rotation of the follower are not hindered, it is necessary to cut, sufficiently, the joinery, at least up to this follower.

DE-U-296 13 802 discloses a cremone whose housing of the control mechanism comprises a front part in the form of two half-shells which can be assembled and held together by means of a rear part in the form of a housing. Each of the half-shells, substantially defining the side walls of this housing, has, internally, a cylindrical housing for receiving the cylindrical end portions of the hub of the follower. It carries, peripherally, a partially toothed crown, extending at the rear of the housing, beyond said half-shells. The back of the case, clipped on these half-shells to keep them assembled and protecting the follower, like a crankcase, is truncated and reveals an opening.

On this point, it should be pointed out that it has been observed, as part of a first inventive step, that the retention and guiding in rotation of the follower was, until now, only through the walls side of the case. More particularly, this follower is provided, on both sides, with a circular boss kept rotated in openings of section fitted in these side walls of the housing. However, such a design is already a constraint in the sizing of the follower.

In a second inventive step, it has been noted that if the notching for receiving the housing is carried out conventionally by means of a cutter or a chisel, intervening from the rabbet of the opening frame, so in a direction parallel to the plane of the latter, the access to the crate maneuvering square, requires, in any case, the realization of a hole in the frame opening perpendicular to its plane.

From these observations it was imagined the invention that ultimately allows to answer the problem in that it allows to lead to an even deeper depth case without this translates into a weakening of the mechanical strength of the assembly, especially the maintenance and guidance of the follower. Moreover, as will become more apparent in the description, this invention also meets the constraints of notching the joinery.

For this purpose, the invention relates to a cremone or espagnolette-lock comprising a housing provided adapted to take position in a notch provided for this purpose in rebate of an opening frame door, window or the like, this housing enclosing a control mechanism comprising at least one follower able to be controlled in rotation by means of a control handle, on this follower, provided with a suitable toothing, coming s' meshing a rack, on the one hand, equipping an operating rod or an easel connected to the latter and, on the other hand, registering substantially between said follower and a headrest to the rear of which extends , above and / or below said housing, the operating rod or rods, in the bottom of the housing being formed a semicircular housing coaxial with the follower for receiving and guiding the latter, the semicircular housing having a semi-cylindrical wall provided with a lumen, at the periphery of the hub of the follower extending a circular or semi-circular rim defined to fit within the thickness of said semi-cylindrical wall, this at the level of said read without emerge through it.

In this regard, according to a preferred feature of the present invention, in the headrest is provided a light for receiving, sliding in its thickness, the rack coming to mesh with the follower.

Advantageously, the follower receives a locking bolt adapted to tilt in the locking position outside the housing through an oblong opening provided for this purpose in the rack.

Furthermore, according to a preferred embodiment of the invention, on the internal side of the housing the side walls of the latter are provided with recesses in the form of cradles adjusted to receive circular bosses equipping, on both sides, the follower.

In the end, as is apparent from the features that have just been exposed, the housing may no longer have an identical depth over its entire height. In fact, in the background from this housing, to the right of the follower, can be provided a housing capable of receiving in part the latter. In addition, it comes to use the thickness of the wall defining the circular housing to ensure better maintenance and guidance of the follower whose mechanical strength, so the section can be reduced to a minimum.

This translates, of course, for a semicircular housing, at the rear of the housing, a radius of curvature itself, relatively low. Also, it can first of all machining in the joinery a recess groove for the housing whose depth corresponds to that of the latter, while the bowl that should be arranged in the bottom of such a groove for the reception of the semicircular housing, can be achieved, not by an additional machining operation, but through the simple drilling that is just made, perpendicular to the plane of this joinery, for the passage of the square maneuver .

In the end, through this bowl obtained by simple piercing, it only weakens very locally this woodwork, especially when its thickness is reduced due to the presence of a glazing which allows to be consistent with applicable standards in the field.

Other objects and advantages of the present invention will become apparent from the following description relating to one embodiment.

• la figure 1 est une représentation schématisée et en élévation d'une crémone prenant position dans une rainure d'encastrement prévue à cet effet en feuillure d'un châssis ouvrant de fenêtre ou analogue ;
• la figure 2 est une vue de détail de la figure 1 illustrant, tout particulièrement, le positionnement du boîtier de la crémone dans un entaillage strictement ajusté au niveau de la menuiserie ;
• la figure 3 est une représentation schématisée et en coupe du boîtier et du mécanisme de commande d'une crémone conforme à l'invention ;
• la figure 4 est une représentation similaire à la figure 3, le fouillot étant équipé, ici, d'un pêne de verrouillage basculant ;
• la figure 5 est une représentation schématisée et en plan du chevalet équipé de la crémaillère venant s'engréner sur un fouillot de crémone conforme à la conception de la figure 4 ;
• la figure 6 est une représentation schématisée et en élévation du fouillot équipé de son pêne de verrouillage ;
• la figure 7 est une représentation schématisée et en coupe du boîtier seul ;
• la figure 8 est une représentation de ce boîtier en coupe selon VIII-VIII de la figure 7.

The understanding of this description will be facilitated by referring to the appended drawing in which:

• Figure 1 is a schematic representation and elevation of a cremone taking position in a recess groove provided for this purpose rabbet of a window sash frame or the like;
• Figure 2 is a detail view of Figure 1 illustrating, in particular, the positioning of the housing of the espagnolette in a notch strictly adjusted at the joinery;
• Figure 3 is a schematic representation in section of the housing and the control mechanism of a cremone according to the invention;
• Figure 4 is a representation similar to Figure 3, the follower being equipped here with a rocking latch bolt;
• Figure 5 is a schematic representation in plan of the bridge equipped with the rack coming to mesh on a follower cremone according to the design of Figure 4;
• Figure 6 is a schematic representation and in elevation of the follower equipped with its locking bolt;
• Figure 7 is a schematic representation in section of the housing alone;
• FIG. 8 is a representation of this box in section along VIII-VIII of FIG. 7.

As shown in the figures of the accompanying drawings, the present invention relates to a cremone or espagnolette-lock 1 for door, window or the like of which only the opening frame 2 has been shown schematically and in section in FIG.

In this connection, such a cremone or espagnolette-lock 1 takes position, very frequently, in a recess groove 3 provided for this purpose rabbet 4 of an amount 5, if any, a cross 6. A notch 7 specific depth 8 more important, is still achieved at this rebate 4 for receiving a housing 9 accommodating the control mechanism 10 of the espagnolette or espagnolette-lock 1.

It should be noted in this regard, that if it is referred to only one cremone in the description which follows or in the accompanying drawings, this is only intended to make more It is clear from the description of the present invention that it is still applicable to espagnolette locks.

Anyway, above and / or below this housing 9 extend operating rods 11, 11A, at the rear of a headrest 12 to which said housing 9 is attached.

As for the control mechanism 10, it comprises, at least, a follower 13 adapted to be rotated by means of a control handle. For this purpose, this follower 13 has, in the central part of its hub 15, an opening 14 for receiving the square maneuvering such a control handle. At the periphery of said hub 15 of this follower 13 extends a toothing 16 on which is meshing a rack 17 equipping, either directly an operating rod 11, 11A, or an easel 18 which is connected to at least one of between them 11.

However, in the context of a cremone 1 having rods 11, 11A operating in opposition, one of the latter 11A can be attacked by this bridge 18 through an inverter pinion 19 which is seen mounted in the housing 9, in Figures 3 and 4.

In the end, this bridge 18 receives, under these conditions, a second rack 20 on which is meshing the toothing of the inverter pinion 19, further engaged with a rack 21 formed at the operating rod 11A.

Note that with respect to this reversing gear 19, if it has been shown pivoting about an axis parallel to the headrest 12, it is perfectly possible to use an inverter gear whose axis of rotation is perpendicular to this headrest. 12 and arranged, accordingly, between the latter and the bottom 22 of the housing 9. The rack 7 and the operating rod 11A come, then, meshing on both sides of such a reversing gear by coming in between between the latter and the side walls of said housing 9.

As already stated in the introductory part, the present invention aims to address the problem of the bulk of the housing 9 and, consequently, the depth 8 of the notch 7 formed in the carpentry for its housing.

For this purpose and according to the invention, in the wall defining the bottom 22 of the housing 9 is formed a semicircular housing 23, coaxial with the follower 13, for receiving and guiding the latter, in the semi-cylindrical wall 24 of this casing 23 being provided, in addition, a light 25 in which is registered, to be guided and maintained, a flange 26 circular or semicircular extending peripherally 27 of the follower 13, being understood, in these conditions, the rack 17 associated here with the bridge 18, is registered, substantially between the follower 13 and the headrest 12.

Finally, it is observed that through a cremone according to the invention, it comes to ensure a maintenance periphery of the follower 13 which ensures the latter a perfect mechanical strength, despite a hub 15 of very small section.

In addition, this maintenance and guidance at the periphery of the follower 13 does not create any additional space, since it is made in the thickness 28 of the semi-cylindrical wall 24 corresponding to the housing 23. Note in this connection that the rim 26 is itself defined to come within this thickness 28 without emerging, at any time, the light 25, to prevent rotation locking of the follower 13, once the housing 5 positioned in the notch 7.

Furthermore, insofar as the housing 9 may have a lower depth, except at the height of this follower 13, the depth 8 of this slit 7 may itself be lower.

It remains to realize in the bottom 29 of this notch 7 the bowl 30 which will allow it to accommodate the semicircular housing 23.

However, as mentioned above, this semi-cylindrical housing is coaxial with the follower 13 so that this bowl 30 can be obtained by a single bore 31, made perpendicular to the plane of the opening frame 2, of appropriate diameter 32, taking into account that In any case, it is necessary to make such a hole for access of the operating square of a control handle to the opening 14 of the follower 13.

In addition, in the context of a window sash frame, such a bowl 30 weakens, that very locally, the profile in which is integrated the espagnolette 1.

In order to gain, still in depth of the housing 9, it has been imagined to integrate, at least in part, the function of holding and guiding the rack 17 to the headrest 12, taking into account, moreover, that this rack 17 must have a sufficient mechanical strength and therefore a minimum thickness in order to mesh with the follower 13.

Also, according to a preferred embodiment of the invention, in said headrest 12 is provided a light 33 for receiving, at least in part and slidingly in its thickness 34, said rack 17.

Thus, by using the thickness 34 of the headrest 12, the depth of the casing 9 is increased, thus, the notch 7.

As provided above, the function of holding and guiding the rack 17 may be provided only partially by the headrest 12. In particular, this rack 17 can still be maintained and guided by means of side walls 41 , 42 of the housing 9 between which it also extends, according to the invention. For this purpose, on the inner side, at these side walls 41, 42 of the housing 9 are formed guide grooves 50 opening at the front of the housing 9 and in which is also included the rack 17, at the level of its longitudinal sides 51, 52. In this way the rack 17 consolidates (stiffen) the connection between the headrest 12 and the housing 9.

It should be observed, as represented in FIGS. 4, 5 and 6, that this follower 13 of such a cremone 1 can still receive a locking bolt 35 able to swing, in the locked position, outside the housing 9, so as to protrude from the headrest 12.

In particular, to allow this passage of the locking bolt 35 the rack 17 receives an oblong opening 36 to the extent that it is placed at the front of the follower 13. As for the headrest 12 it is already provided with a light 33 in which said rack 17 fits.

This is defined, in this case, by two parallel branches 37, 38 each provided with a set of teeth 39 able to cooperate with toothings 16 adopting a symmetrical arrangement on either side of the locking bolt 35, at the level of the follower 13.

Advantageously, in the side walls 41, 42 of the housing 9, internally to the latter, are provided recesses 43 in the form of cradles opening at the edge of the front of these side walls, these recesses 43 being adjusted for the reception to circular bosses 44 fitted on either side the hub 15 of the follower 13.

The result of such a design is that the housing 9 can be of the monobloc type, and designed in particular by molding. Thus, the side walls 41, 42 and the peripheral wall 45, in particular the bottom 22, of this housing 9 form a single assembly in which the elements of the control mechanism 10 can be positioned by introducing from the opening 46 to the front of this housing 9, which facilitates considerably the mounting of such a cremone 1. Or, a housing 9 made, and by molding, provides a piece of high accuracy. This housing is able, therefore, to fit perfectly fit the other parts of the control mechanism of the espagnolette or espagnolette-lock. However, because of this self-adjustment of the different parts, those in motion are better maintained resulting in increased mechanical strength of the espagnolette or espagnolette lock, so improved reliability.

Note that the presence of an inverter pinion 19 does not prevent the achievement of this result. Thus, as can be seen in the drawings, especially in FIGS. 7 and 8, other cradle-shaped recesses 47 may be provided at these lateral walls 41, 42 internally to the housing 9, for receiving the ends of the pins. 48 on which is mounted this reversing gear 19.

In the end, as is apparent from the foregoing description, the present invention responds, advantageously, to the technical problem raised.

Claims (9)

1. Espagnolette or espagnolette lock comprising a casing (9) designed capable of being positioned in a cut-out (7) provided for this purpose in the rabbet of a leaf (2) of a door, window or similar, said casing (9) containing a control mechanism (10) comprising at least one tumbler (13) capable of being driven in rotation by means of an operating handle, on this tumbler (13), provided with an appropriate toothing (16), meshing a rack (17), on the one hand, equipping an operating rod (11, 11A) or a trestle (18) connected with the latter, and, on the other hand, inserted, substantially, between said tumbler (13) and a faceplate (12) at the back of which extends, above and/or below the casing (9), the operating rod or rods (11, 11A), in the bottom (22) of the casing (9) being installed a semicircular case (23) coaxial to the tumbler (13) for receiving and guiding the latter, characterised in that the semicircular case (23) includes a semi-cylindrical wall (24) provided with an opening (25), in the periphery of the hub (15) of the tumbler (13) extending a circular or semicircular edge (26) designed to be inserted in the thickness (28) of said semi-cylindrical wall (24), at the level of said opening (25) without emerging through the latter.
2. Espagnolette or espagnolette lock according to claim 1, characterised in that in the faceplate (12) is provided for an opening (33) for receiving, at least partially and slidingly in its thickness (34), the rack (17) meshing on the tumbler (13).
3. Espagnolette or espagnolette lock according to claim 2, characterised in that on the internal side at the level of the lateral walls (41, 42) of the casing (9) are provided for guiding grooves (50), ending in the front portion of said casing (9) and in which is also inserted the rack (17), at the level of its longitudinal sides (51, 52).
4. Espagnolette or espagnolette lock according to any of the preceding claims, characterised in that the tumbler (13) includes a locking bolt (35) capable of tilting in locked position outside the box (9) through an elongate aperture (36) provided for this purpose in the rack (17).
5. Espagnolette or espagnolette lock according to claim 4, characterised in that the rack (17) is defined by two parallel legs (37, 38) provided, each, with a toothing (39) capable of co-operating with toothings (16) assuming a symmetrical arrangement on both sides of the locking bolt (35) at the level of the tumbler (13).
6. Espagnolette or espagnolette lock according to any of the preceding claims, characterised in that on the internal side of the casing (9) the side walls (41, 43) of the latter are provided with recesses (43) in the form of cradles ending at the level of the front edge of these lateral walls (41, 42), these recesses (43) being adapted for receiving circular bosses (44) equipping on both sides the hub (15) of the tumbler (13).
7. Espagnolette or espagnolette lock according to any of the preceding claims, characterised in that the casing (9) is of the monoblock type, the side walls (41, 42) and the peripheral wall (45), in particular, the bottom (22) of this casing (9) forming one single aggregate in which can be positioned the components of the control mechanism (10) by insertion through the aperture (46) in the front of said casing (9).
8. Espagnolette or espagnolette lock according to any of the preceding claims, characterised in that it includes operating rods (11, 11A) functioning in opposite direction, one of the latter (11A) being actuated by the trestle (18) through a reversing gearwheel (19) mounted in the casing (9).
9. Espagnolette or espagnolette lock according to claim 8, characterised in that the reversing gearwheel (19) is mounted in the casing (9) pivotally about an axis (48) parallel to the faceplate (12), the side walls (41, 42) of said casing (9) including, internally with respect to the latter, recesses in the form of cradles (47) for receiving axle ends (48) on which is mounted said reversing gearwheel (19).

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